MALLOPHAGA— WATERSTON. 269 



PART II.— MALLOPHAGA. 



BY JAMES WATERSTON, B.D., B.Sc. 



Comparatively little material belonging to this sub-order was collected, there having 

 been submitted only some fifty examples representing six species and three families, 

 as follows : — 



Family TRICHODECTIDAE, Burmeister. 



Genus TRICHODECTES, Nitzsch. 



1. Trichodectes equi, Linn. 



Pedieidus equi, Linnaeus. Syst. Nat. X. 1758, p. 612. 

 From pony, S. Trinidad (Dr. Atkinson Coll.). 



Family PHILOPTERIDAE, Burmeister. 

 Genus ESTHIOPTERUM, Harrison. 



1 . Esthiopterum gracilicorne, Piag. 



Lipeurus gracilicornis, Piaget. Les Pediciilines, 1880, p. 309, PI. 25, fig. 6. 

 From Frigate bird, S. Trinidad (Dr. Atkinson Coll.). 



2. Esthiopterum sp. 



Host uncertain. Two females which represent a new species belonging to a group 

 whose typical hosts are to be found in the genus Puffinus. The females of all this 

 group are critical though the males are very distinct. It would be unwise therefore to 

 offer a description based on the present material. I have known the species for some 

 years and believe that Mr. Harrison has already drawn up some notes on it which are 

 possibly now in press. 



3. Esthiopterum sp. 



One example (? ?) too immature for certain identification but recognised as a 

 tubinarial parasite. 



Family MENOPONIDAE, Mjoberg. 



Genus MENOPON, Nitzsch. 



1. Menopon aurifasciatum, Kell. 



Menopon aurifasciatum, Kellog (V. L.) New Mallophaga, iii, 1899, p. 43, PI. 4, fig. 5. 

 Frigate bird, S. Trinidad (Dr. Atkinson Coll.). 



